Northwest Missouri State U in Maryville, MO, has an 18-hole course on campus. It mostly goes between and around the sports practice fields, so throws do not endanger non-players most of the time. It makes good use of the "wasted" space around the fields, and includes a good mix of longer and shorter holes. Most shots are fairly open, but some wander into treed areas.
When sports teams are practicing, throwers just have to be careful and possibly wait a few moments for a safe time to throw. A few holes get close to parking lots and a couple of buildings, but don't really go into areas that disrupt campus life. I have only played it as a campus visitor (during a conference), and I appreciated the fact that I was able to play unmolested and didn't feel like I was intruding or "trespassing" where I didn't really belong. If the course went through the middle of campus, I probably would not have played it.